MIC5191 Datasheet | Micrel Semiconductor

Micrel Ultra High-Speed, High-Current Active Filter/LDO Controller General Description The MIC5191 is an ultra high-speed linear regulator. It uses an external N-Channel FET as its power device. The MIC5191's ultra high-speed abilities can handle the fast load demands of microprocessor cores, ASICs, and other high-speed devices. Signal bandwidths of greater than 500k Hz can be achieved with a minimum amount of capacitance while at the same time keeping the output voltage clean, regardless of load demand. A powerful output driver delivers large MOSFETs into their linear regions, achieving ultra-low dropout voltage. 1.25VIN ±10% can be turned into 1V ±1% without the use of a large amount of capacitance. MIC5191 (1.0V reference) is optimized for output voltages of 1.0V and higher. The MIC5191 is offered in 10-lead 3mm × 3mm MLF™ and 10-lead MSOP-10 packages and has an operating junction temperature range of - 40°C to +125°C. All support documentation can be found on Micrel’s web site at .micrel.. Features - Input voltage range: VIN = 1.0V to 5.5V - +1.0% initial output tolerance - Dropout down to 25m V@10A - Filters out switching frequency noise on input - Very high large signal bandwidth >500k Hz - PSRR >40d B at 500k Hz - Adjustable output voltage down to 1.0V - Stable with any output capacitor - Excellent line and load regulation specifications - Logic controlled shutdown - Current limit protection - 10-lead MLF™ and MSOP-10 packages - Available - 40°C to +125°C junction temperature Applications - Distributed power supplies - ASIC power supplies - DSP, µP, and µC power supplies Typical Application VCC = 12V C1 0.01µF VIN = 1.2V MIC5191 IS VIN VCC1 VCC2 PGND EN C3 0.01µF P R3 12.5kΩ GND SGND FB C2 10µF OUT VOUT =1.0V@7A IR3716S Micro Lead Frame and MLF are trademarks of Amkor Technology, Inc. Power PAK is a trademark of Siliconix, Inc. Micrel, Inc. - 1849 Fortune Drive - San Jose, CA...